8 - 3 6/15 = 7 15/15 - 3 6/15 = (7 - 3) + (15/15 - 6/15) =
= 4 + (15-6)/15 = 4 + 9/15 = 4 9/15 = 4 3/5 = 4,6
ответ: 4,6
8 - 3 6/15 = 7 15/15 - 3 6/15 = (7 - 3) + (15/15 - 6/15) =
= 4 + (15-6)/15 = 4 + 9/15 = 4 9/15 = 4 3/5 = 4,6
ответ: 4,6